Using rsync to syncronize two unmounted disk partitions
jp at saucer.midcoast.com
Mon Mar 20 14:48:20 GMT 2006
For duping drives or big partitions I usually use dd with a bs of 1M.
Haven't tried it with ssh yet.
On Mon, Mar 20, 2006 at 03:54:32AM -0600, John Van Essen wrote:
> On Fri, 17 Mar 2006, Antonio Arauzo Azofra <arauzo at decsai.ugr.es> wrote:
> > Thanks to your message I did a new test, and it seems
> > rsyncs allows this:
> > rsync <file local or remote> /dev/hda9
> > I have hanged the device testing to overflow it, but it seems it works.
> > (I haven't tested much yet)
> Just because rsync is such a great tool doesn't mean it's appropriate
> for every copying task.
> Something like this is better suited:
> dd bs=16384 if=/dev/hda8 of=/dev/hda9
> To copy between machines:
> dd bs=16384 if=/dev/hda8 | ssh user at host dd bs=16384 of=/dev/hda9
> Disclaimer: I haven't actually tried the ssh trick, above.
> Also - a different block size (bs=) may be more efficient depending
> on the device characteristics.
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